WO2000025749A9 - Utilisation de gommes xanthanes pour la preparation de compositions pharmaceutiques - Google Patents
Utilisation de gommes xanthanes pour la preparation de compositions pharmaceutiquesInfo
- Publication number
- WO2000025749A9 WO2000025749A9 PCT/FR1999/002672 FR9902672W WO0025749A9 WO 2000025749 A9 WO2000025749 A9 WO 2000025749A9 FR 9902672 W FR9902672 W FR 9902672W WO 0025749 A9 WO0025749 A9 WO 0025749A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- xanthan gum
- release
- particles
- active principle
- agglomerated
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/205—Polysaccharides, e.g. alginate, gums; Cyclodextrin
Definitions
- the invention relates to pharmaceutical formulations suitable for the preparation of solid pharmaceutical products for oral administration, in particular having a prolonged release of the active principle after their administration.
- the benefits of prolonged release or delayed effect are well known.
- the delayed dissolution of the active ingredient prolongs the duration of absorption by the gastrointestinal system, which has the effect of prolonging the therapeutic effect while avoiding or at least reducing the side effects.
- a delay formulation must meet a certain number of criteria, in particular to produce a uniform and constant dissolution and to be effective for a prolonged period. It is also important that the formulation is easy to prepare, that the preparation process is reproducible and can be implemented for a large number of different substances.
- controllable parameters It is also important to control the release profile of an active substance by acting on controllable parameters and preferably on a small number of these parameters, a single parameter being preferred.
- hydrophilic delay effect matrices are often used because the manufacture of the final product is simple and reproducible, it is possible to obtain a gradual and continuous release, that they can be applied to many substances. active and that they are economically advantageous.
- hydrophilic matrix cellulose derivatives have been used mainly, in particular hydroxypropylmethylcellulose (HMPC).
- HMPC hydroxypropylmethylcellulose
- US 5,047,248 describes the use of xanthan gums as the main or sole ingredient of hydrophilic delay-effect matrices for the administration of drugs in the form of tablets, lozenges, etc.
- xanthan gum makes it possible to obtain matrices allowing prolonged and gradual release.
- amount of xanthan gum in the formulation according to the solubility and the amount of active principle, it is possible to modify the release profile in vitro.
- the other known means for modifying the release profile of a given active substance consist in adding lactose and / or dicalcium phosphate to the hydrophilic material (PCT / FR 96/00133 published under the number WO 96/22767), or a other hydrophilic polymer, in particular a polymer capable of crosslinking with xanthan gum (US 5,128,143).
- the subject of the invention is therefore a process for preparing a solid pharmaceutical composition comprising an active substance and a matrix comprising xanthan gum in the form of agglomerated or non-agglomerated particles, characterized in that the particle size of the particles is adjusted. xanthan gum so as to give the pharmaceutical composition a determined release profile of the active substance over time.
- Xanthan gum is used in the form of powder or in the form of granules.
- the granulated form is preferred because of its compressibility which makes it particularly suitable for direct compression.
- the release profile obtained will not depend on the median diameter of the granules but on the median diameter of the agglomerated powder particles constituting the granule.
- the limits of the particle size values indicated below correspond to the values of the powder particles before agglomeration, in the case where the powder particles are agglomerated in the form of granules. Thanks to the invention, it is possible, by adjusting only the particle size of the xanthan gum particles of the starting powder, to obtain a desired release profile for a given active substance.
- the invention makes it possible to obtain a wide spectrum of release profile by using, for the manufacture of the matrix, essentially exclusively xanthan gum in the form of solid particles agglomerated or not, by modifying the size of the particles constituting xanthan gum. .
- the work of the inventors more particularly made it possible to demonstrate that the duration of release of the active principle increased inversely with respect to the size of the xanthan gum particles.
- xanthan gum particles having a relatively large median diameter are used.
- xanthan gum particles having a median diameter are used which is all the smaller the longer the desired release time.
- the median diameter D 50 is the particle size such that 50% of the particles have a size smaller than this size.
- the median diameter D 50 is measured by particle size distribution by laser diffraction using a HELOS® particle size analyzer from the company SYMPATEC.
- the concentration of xanthan gum of the pharmaceutical composition can also be varied.
- a release time is obtained the longer the higher the concentration of xanthan gum.
- the release time is shortened.
- sustained release is used when the time necessary for the dissolution of the active principle in a reference aqueous medium, such as a saline solution, a buffer solution or a physiological saline solution is greater than two hours.
- xanthan gum particles having a particle size such that D 5 o is less than or equal to 300 ⁇ m.
- concentration of xanthan gum in the composition can vary from 5% to 99.9% by weight. However, it is advantageously at most 60% by weight, preferably at most 40%, and more preferably at most 20%, higher amounts not being desirable because of the cost price of xanthan gum.
- xanthan gum concentrations within the lower limit of the range indicated above are used, the release time can be increased by using xanthan gum particles of small particle size.
- a composition for immediate release of an active ingredient at 5% xanthan gum or less use is preferably made of particles of xanthan gum agglomerated or not having a D 5 o of particles (before agglomeration, if necessary) greater or equal to 130 ⁇ m, and preferably less than 300 ⁇ m, while if a prolonged release of the active principle is desired, use is preferably made of particles of xanthan gum, agglomerated or not, having a D 5 o ⁇ 130 ⁇ m.
- the active substances which can be formulated with the xanthan gum matrices in accordance with the process according to the invention can be highly water-soluble such as acebutolol hydrochloride or poorly water-soluble such as acetylsalicylic acid or paracetamol.
- non-limiting examples are anti-rheumatic and non-steroidal anti-inflammatory drugs (ketoprofen, ibuprofen, flurbiprofen, indomethacin, phenylbutazone, allopurinol, nabumetone, etc.) opioid analgesics or not (paracetamol, phenacetin, aspirin ...), antitussives (codeine, codethyline, alimemazine %), psychotropics (trimipramine, amineptine, chlorpromazine and phenothiazine derivatives, diazepam, lorazepam, nitrazepam, meprobamate, zop , and derivatives of the cyclopyrrolone family Among the cyclopyrrolone family Among the cyclopyrrolone family Among the cyclopyrrolone family Among the cyclopyrrolone family Among the cyclopyrrolone family Among the cyclopyrrol
- the tablets can be formulated with other excipients, including other hydrophilic polymers.
- the matrix may also comprise one or more pharmaceutically acceptable excipients, more particularly diluents, cohesion agents, lubricating agents and coloring agents such as saccharides, in particular lactose and sucrose, fatty acids such as stearic acid, for example; polyethylene glycol, dicalcium phosphate, silica, silicoaluminates, cellulose derivatives, gelatin, polyvinylpyrrolidone and salts of fatty acids such as magnesium stearate.
- pharmaceutically acceptable excipients more particularly diluents, cohesion agents, lubricating agents and coloring agents such as saccharides, in particular lactose and sucrose, fatty acids such as stearic acid, for example; polyethylene glycol, dicalcium phosphate, silica, silicoaluminates, cellulose derivatives, gelatin, polyvinylpyrrolidone and salts of fatty acids such as magnesium stearate.
- Xanthan gum generally forms between 10% and 100% by weight of the matrix. It advantageously represents at least 80% and preferably at least 90% by weight of the matrix.
- the amount of active ingredient used in the pharmaceutical compositions prepared according to the process of the present invention can vary within wide limits. It is more particularly between 0.001 and 95% by weight of the total composition, the balance being provided by the matrix.
- the invention is particularly suitable for active ingredients with a high dosage, that is to say representing at least 10%, advantageously at least 20%, more advantageously at least 30%, preferably at least 50% and advantageously at least 80% of the weight of the composition.
- xanthan gum is used in the form of powder or granules.
- any granulation method can be used, such as atomization, fluidized bed, extrusion, granulation by turntables, etc., or a combination of these methods.
- pulverulent xanthan gum is sprayed, in a fluidized bed using a gas stream and water, optionally containing a surfactant, is sprayed onto the powder and the granules are obtained by drying.
- a process is described in detail in FR-A 2 600 267.
- all the excipients in the matrix are co-granulated before being compressed.
- the xanthan gum granules or powder are mixed with the active principle and optionally the other excipients of the composition, according to any known solid / solid mixing method and dry compressed by direct compression, that is to say without the use of water or an organic solvent such as ethanol.
- any known solid / solid mixing method and dry compressed by direct compression, that is to say without the use of water or an organic solvent such as ethanol.
- FIG. 1 represents the release profiles of aspirin, obtained with three grades of xanthan gum
- FIGS. 2A and 2B respectively represent the release time of 50% and 80% of paracetamol as a function of the polymer concentration for formulations comprising the grades ⁇ RHODIGEL 200,
- the diameters D 10 and Dgo such that 10% and 90% of the particles have a diameter smaller than these diameters.
- the HMPC used was that marketed under the name ⁇ METHOCEL K 15M (Dow Chemicals, USA), having a D 50 of 70 ⁇ m.
- the purified polymers were used with the various active substances to obtain compacted forms using a hydraulic press.
- the release profiles were obtained with different concentrations (20%, 10% and 5%) of matrix polymer and the active substance tested.
- Example 1 Composition comprising acetylsalicylic acid and xanthan gum
- the xanthan gum concentrations are 5, 10 and 20% by weight of the composition, the remainder being composed of acetylsalicylic acid.
- the release profile obtained is that shown in FIG. 1. With a concentration of 5% xanthan gum having a
- Example 2 Composition comprising paracetamol (APAP) and xanthan gum
- Pre-granulation paracetamol is used.
- the grade ⁇ RHODIGEL Standard at 10% causes disintegration of the tablet which accelerates dissolution compared to that obtained with pure compacted paracetamol (fig. 2A and 2B).
- Example 3 Composition comprising acebutolol hydrochloride and xanthan gum.
- the ⁇ RHODIGELControl grade does not provide an extended release profile, including at a concentration of 20%.
- the release profile is substantially that obtained with the same concentration of HPMC having a median particle size of 70 ⁇ m.
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99950900A EP1126825A1 (fr) | 1998-11-02 | 1999-11-02 | Utilisation de gommes xanthanes pour la preparation de compositions pharmaceutiques |
AU63495/99A AU6349599A (en) | 1998-11-02 | 1999-11-02 | Use of xanthan gums for preparing pharmaceutical compositions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813743A FR2785191B1 (fr) | 1998-11-02 | 1998-11-02 | Utilisation de gommes xanthanes pour la preparation de compositions pharmaceutiques |
FR98/13743 | 1998-11-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000025749A1 WO2000025749A1 (fr) | 2000-05-11 |
WO2000025749A9 true WO2000025749A9 (fr) | 2002-08-22 |
Family
ID=9532264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002672 WO2000025749A1 (fr) | 1998-11-02 | 1999-11-02 | Utilisation de gommes xanthanes pour la preparation de compositions pharmaceutiques |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1126825A1 (fr) |
AU (1) | AU6349599A (fr) |
FR (1) | FR2785191B1 (fr) |
WO (1) | WO2000025749A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3164117B1 (fr) | 2014-07-03 | 2023-09-06 | SpecGx LLC | Formulations à libération immédiate de dissuasion d'abus comprenant des polysaccharides non cellulosiques |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5292534A (en) * | 1992-03-25 | 1994-03-08 | Valentine Enterprises, Inc. | Sustained release composition and method utilizing xanthan gum and an active ingredient |
FR2729857B1 (fr) * | 1995-01-27 | 1997-04-04 | Rhone Poulenc Chimie | Compositions pharmaceutiques sous forme de comprimes a liberation prolongee a base de granules en polysaccharides de haut poids moleculaire |
-
1998
- 1998-11-02 FR FR9813743A patent/FR2785191B1/fr not_active Expired - Fee Related
-
1999
- 1999-11-02 WO PCT/FR1999/002672 patent/WO2000025749A1/fr not_active Application Discontinuation
- 1999-11-02 AU AU63495/99A patent/AU6349599A/en not_active Abandoned
- 1999-11-02 EP EP99950900A patent/EP1126825A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AU6349599A (en) | 2000-05-22 |
FR2785191A1 (fr) | 2000-05-05 |
FR2785191B1 (fr) | 2002-05-31 |
EP1126825A1 (fr) | 2001-08-29 |
WO2000025749A1 (fr) | 2000-05-11 |
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